Currently only for sampling at the pump and testing in the lab. However, a portable MDWXRF instrument (ASTM method D 7039) is being considered for field testing use.
Question and Answer was originally posted at http://www.epa.gov/otaq/diesel/documents/420b06010.pdf
Is sulfur measurement at 15 ppm level practical at the pump? Do any of these methods work for portable/field testing?
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